County annual report · FIPS 48111
2017 Dallam County, TX Power Outage Report
In 2017, customers in Dallam County, TX went without power for an average of 20.2 hours, a total of 26K customer-hours (Texas average 1.6 hours). That ranks 14th worst of 249 Texas counties and 272nd of 2,786 nationally.
Compared with TX, the US and 2016
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Dallam County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 25, 2017 02:00 | August 25, 2017 02:45 | 45m | 3,118 | 959 |
| 2 | September 2, 2017 18:30 | September 3, 2017 00:00 | 5h 30m | 1,715 | 2,973 |
| 3 | April 30, 2017 05:30 | May 2, 2017 03:15 | 1d 21h | 781 | 18K |
| 4 | July 24, 2017 00:45 | July 24, 2017 03:30 | 2h 45m | 217 | 335 |
| 5 | September 23, 2017 22:45 | September 24, 2017 04:00 | 5h 15m | 126 | 388 |
| 6 | September 29, 2017 09:15 | September 29, 2017 11:15 | 2h | 126 | 158 |
| 7 | August 13, 2017 23:30 | August 14, 2017 05:30 | 6h | 100 | 336 |
| 8 | October 15, 2017 15:00 | October 15, 2017 18:30 | 3h 30m | 97 | 316 |
| 9 | October 4, 2017 08:00 | October 4, 2017 15:30 | 7h 30m | 76 | 344 |
| 10 | July 21, 2017 15:30 | July 21, 2017 23:00 | 7h 30m | 71 | 204 |
Outage episodes by size in 2017: 7 reached 100+ customers, 2 reached 1,000+ customers, 0 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Dallam County reported on EIA Form 861 for 2017, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Southwestern Public Service Co | 2017 | 3.9 hrs | 1.25 | 1.7 hrs | 1.05 |
| Tri-County Electric Coop, Inc (OK) | - | - | - | - | - |
| Rita Blanca Electric Coop, Inc | - | - | - | - | - |
| Southwestern Electric Coop Inc - (NM) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Texas's customers in 2017; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 1,292 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Dallam County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Dallam County, TX annual power outage report, 2017, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2017/texas/dallam-county